In many other animals, females mate with many males, or can store sperm inside their bodies. Some have chemicals that incapacitate their rivalssome have barbsand some team up with their brothers.
Register for an account
Others win the competition by simply being very long and fast — some fruit flies, for example, have sperm cells that are a couple of inches long. When competition is intense, every sperm counts.
But the naked sperm rat has no sperm competition at all. In any single colony, with around gif to 90 individuals, the only ones that can reproduce are the queen and her male consort with a couple of possible affairs on the side. With such fixed fates, there is no reason for the other males to compete for mating rights, and no reason to have Olympic-level sperm. Sperm structure and motility in the eusocial naked mole-rat, Heterocephalus glaber : a case of degenerative orthogenesis in the absence of sperm competition?
BMC Evolutionary Biology in press. Indiscriminate squid just implanting everyone with sperm. Hermaphrodite insects fertilise daughters with parasitic sperm.
SUE - ANIMATIONS & ILLUSTRATIONS
Sperm war — the sperm of ants and bees do battle inside the queens. Why do female seed beetles prefer the sperm of inferior males?
The sexual battles of flatworms: gif sperm, mating rings, traumatic insemination, and going down on yourself. Pocket science — sperm races and poison-stealing voles.
Sperm icons colored modern 3d design. Vector Flowers. Document decor template elegant 3d blue bow sketch. Gift card templates modern dynamic lights effect decor. Computing program icons collection colored modern design. Ivf logo vector graphic set icon artificial insemination bioengineering biotechnology birth of embryo in linear flat contour thin design app web site template infographic. Arrows Tattoo. Crazy World Vector Art. Abstract Christmas Tree Vector. Disco Ball clip art.
Smile Face clip art. Domo Kun clip art. Acrosome Reaction Diagram clip art.
sperm swimming Memes & GIFs - Imgflip
X Account Login Forgot your password? Register for an account X Enter your name and email address below. X Website gif code Enter your access code into the form field below. Apply code If you are a Zinio, Nook, Kindle, Apple, or Google Play sperm, you can enter your website access code to gain subscriber access. The Sciences. Planet Earth. Newsletter Sign up for our email newsletter for the latest science news.
Sign Up. My Science Shop Elements Flashcards. My Science Shop Einstein's Universe. My Science Shop Observer's Handbook Shop Now. Stay Curious. Join Our List.
New to Gfycat?
Three Colour Fireworks clip art. Rubik's Cube Random clip art. Hourglass With Sand clip art.